Total incompetence

I would like to know if it is impossible for nedbank to assist one person with a query and to sort it out without fights, tantrums and the mere fact that I have already been to the branch in my area like 6 times, phoned the call centre more then that, faxed the documentation required more then 4 times already and still no response what so ever. I've done my very best to sort out the problem from my side, I've done everything that was required and requested from nedbank to assist as far as possible and then some idiot still phones me with a huge attitude having no idea whats going on as nothing seems to be recorded on their system and tells me that I'm still owning nedbank money, which afterwards get deducted from my account, which I will probably be told that when it gets refunded I would wait between 4 and 7 working days WHICH I CAN TELL YOU NOW WILL NOT BE EXCEPTED.